LONG GLASS LABORATORY INLET TUBE WITH 45° SAFETY BULB CHEMICAL OR PHARMACEUTICAL DISPENSING APPARATUS
(c. 1910s–1930s)
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PRICE: £32
An exceptional and highly elegant early 20th-century professional laboratory glass instrument, designed for the precise transfer or introduction of liquid chemical reagents. Blown from clear technical glass, the apparatus is structurally divided into a specialized pressure-relief expansion chamber and an elongated dispensing stem. The primary functional element consists of a substantial, teardrop-shaped safety bulb ("grosse goutte") engineered to act as a splash-head or expansion reservoir to prevent volatile or corrosive liquids from surging upward. The neck above this bulb features a vertical, standard bottle-style rimmed lip, designed to receive a rubber suction bulb or flexible tubing. Reflecting its genuine historical use, a fragment of original fine twine remains knotted around this upper collar. The lower architecture of the bulb transitions smoothly via a fixed 45-degree angled bend into a remarkably long, straight 35.5cm delivery tube, which gently and uniformly tapers down to a narrow, open terminal nozzle. This specific angle and length allowed chemists to siphon or introduce fluids deep into round-bottomed distillation flasks or carboys while maintaining a safe handling posture. Condition: Presented in excellent condition, showing remarkable structural integrity for such an elongated and fragile instrument. Completely free from fractures, hairline cracks, or chips along the delicate 35.5cm stem and the upper rim. The glass body displays an honest, uniform light atmospheric dullness (ternissement) from historic laboratory exposure, heavily reinforcing its authentic scientific history. Dimensions:
Please note: This historical scientific artifact is sold strictly as a decorative and collectable object for display. It is completely obsolete and is not intended for any modern chemical, culinary, or practical laboratory use. Shipping Information:
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